JPH10171942A - Data carrier system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a data carrier system which performs communication of operation information without carrying an IC card. SOLUTION: A data carrier system consists of a vehicle side controller 12 that is mounted on a vehicle 11, keys 19A and 19B and a R/W device 31 which is installed in an office 29, and transponders 20 are contained in the keys 19A and 19B. In the case of this structure, when an operator inserts the keys 19A and 19B into the device 31 after the controller 12 sends operation data to nonvolatile memory of the transponders 20, the device 31 reads the operation data from the transponders 20 and gives it to a personal computer 30. Then, it solves the inconvenience that the operator has to carry an IC card for operation data recording.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data carrier system for providing vehicle operation information from a vehicle-side control device to an external control device.

[0002]

FIG. 22 shows a conventional configuration of the data carrier system. Here, the vehicle 1 is equipped with a vehicle-side control device 2,
When the C card 3 is inserted into a holder (not shown) of the vehicle 1, operation information (such as the date and time of starting the engine) is transmitted from the vehicle-side control device 2 to the IC card 3 and recorded in the memory of the IC card 3. .

[0003] In an office or the like, a personal computer 4 and a reader device 5 are installed. When a driver operates the personal computer 4 after carrying the IC card 3 and inserting the reader device 5, the personal computer 4 is read. 4 transmits a command to “read data” to the reader device 5. Then, a command “send data” is transmitted from the reader device 5 to the IC card 3,
Operation information is transferred from the IC card 3 to the personal computer 4 through the reader device 5.

However, in the above-described conventional configuration, there is an inconvenience that the driver carries both the key and the IC card 3, and there is room for improvement in terms of usability. Especially in the case of special vehicles such as construction vehicles, key and IC
Carrying the card 3 is extremely inconvenient, and improvement of usability is urgently desired.

[0005] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a data carrier system capable of communicating operation information without carrying an IC card.

[0006]

According to a first aspect of the present invention, there is provided a data carrier system which is mounted on a vehicle and transmits operation information of the vehicle, and is provided on a key of the vehicle and transmitted from the vehicle side control device. The present invention is characterized in that it comprises a data carrier device for recording operation information, and a reader device for reading operation information from the data carrier device when a command signal is given from an external control device. According to the above means, the operation information is communicated using the vehicle key as a medium. This eliminates the need to carry an IC card, thus improving usability.

In the data carrier system according to the present invention, when it is determined that the key has been registered based on the key information transmitted from the data carrier device, the vehicle-side control device permits the vehicle to start. However, it has features. According to the above means, the operation data can be communicated using the existing key having the security function (immobilizer function, door security function).

According to a third aspect of the present invention, in the data carrier system, the reader device has a reader / writer function of giving the user information to the data carrier device to record the user information and reading the user information from the data carrier device. Having. According to the above-described means, user information (maintenance data, optional mounting data, etc.) can be given and recorded from the reader device to the data carrier device, or the user information recorded on the data carrier device can be read and notified. Therefore, it is not necessary to record user information in an IC card, a notebook, or the like, and to carry the user information, thereby further improving usability.

According to a fourth aspect of the present invention, there is provided a data carrier system, wherein the vehicle-side control device, the data carrier device, and the reader device have an antenna coil, the communication between the vehicle-side control device and the data carrier device, the communication between the data carrier device and the reader device. The communication between the vehicle-side control device and the data carrier device is performed in a non-contact manner, and the communication power is transmitted from the antenna coil of the vehicle-side control device to the data carrier device through the antenna coil of the data carrier device. When the communication is performed between the data carrier device and the reader device, the operation power is supplied to the data carrier device from the antenna coil of the reader device through the antenna coil of the data carrier device in a non-contact manner. According to the above means, at the time of communication between the vehicle-side control device and the data carrier device, operating power is supplied from the vehicle-side control device to the data carrier device in a non-contact manner, and the data carrier device records operation information. In communication between the data carrier device and the reader device, operating power is supplied from the reader device to the data carrier device in a non-contact manner, and the data carrier device transmits operation information. For this reason, it is not necessary to incorporate a power source such as a battery in the key, so that it is possible to prevent the key from being enlarged, and to eliminate the trouble of replacing the battery.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will now be described with reference to FIGS.
This will be described with reference to FIG. First, in FIG. 1, a vehicle-side controller 12 corresponding to a vehicle-side control device is mounted on a construction vehicle 11. As shown in FIG. 8, the vehicle-side controller 12 includes a control circuit 13 mainly composed of a microcomputer, a power amplifier 14, a detection circuit 1
5, an amplifier 16, two antenna coils 17a (only one is shown), and two resonance capacitors 17b (only one is shown). One of the antenna coils 17a is an ignition key cylinder (not shown). ), And the other antenna coil 17a is disposed on a door key cylinder (not shown).

Reference numeral 17 denotes a resonance circuit including an antenna coil 17a and a resonance capacitor 17b.

The control circuit 13, the power amplifier 14, the detection circuit 15, the amplifier 16, and the two resonance capacitors 17b
It is stored in a box 18 (see FIG. 9). As shown in FIG. 9, mode switches 18a to 18e, set switches 18f, 2
The digital circuit 18g and the LEDs 18a1 to 18e1 and 18h are mounted, and the control circuit 13 sets functions according to the operation contents of the switches 18a to 18g, and switches the LEDs 18a1 to 18e1 and 18h, as described later. The function setting state is notified by lighting / flashing.

Normal key 19A and master key 19B
As shown in FIG. 1, the main body 19a and the key grip 1
9b, and each key grip 19
The transponder 20 is disposed in the area b. This transponder 20 corresponds to a data carrier device, and as shown in FIG.
2, control circuit 23, reset circuit 24, CR oscillation circuit 2
5, a nonvolatile memory 26 composed of an EEPROM, a detection circuit 27, and a modulation circuit 28. The normal key 19
A is a key carried by the driver for driving, and a master key 19B is a dedicated key for registering an ID code or the like.

The resonance circuit 21 includes an antenna coil 21a and a resonance capacitor 21b.
When the main body portion 19a of each of 9A and 19B is inserted into an ignition key cylinder or a door key cylinder, the antenna coil 17a on the vehicle side and the antenna coil 21a of the resonance circuit 21 are electromagnetically connected.

A control program is stored in the control circuit 13 on the vehicle side. The control circuit 13 turns on and off the power amplifier 14 based on the control program.
A power signal (a carrier signal shown in FIG. 10A) whose level decreases at a predetermined timing is transmitted from each antenna coil 17a.

Accordingly, the main body 19 of the keys 19A, 19B
a is inserted into the ignition key cylinder or the door key cylinder, and when the antenna coil 17a on the vehicle side and the antenna coil 21a on the key side are electromagnetically connected, the power signal from the antenna coil 17a on the vehicle side receives the antenna signal on the key side. Provided to the coil 21a in a non-contact manner.
The resonance frequency of the resonance circuit 21 is set equal to the frequency band of the power signal transmitted from the vehicle.

The power supply circuit 22 includes a rectifier diode 22
a, constant voltage diode 22b, smoothing capacitor 22
c, a constant voltage circuit 22d, etc., which rectifies and smoothes the power signal received by the antenna coil 21a on the key side to create a DC power supply. Control circuit 2
Numeral 3 is mainly composed of a microphone computer. The DC power generated by the power supply circuit 22 is connected to a control circuit 23.
The control circuit 23 is driven by a DC power supply from the power supply circuit 22.

The reset circuit 24 comprises a diode 24a and a capacitor 24b.
The control circuit 23 is kept in the power-on reset state until the DC power supplied to DD reaches a predetermined level. The CR oscillation circuit 25 includes a resistor 25a and a capacitor 25b, and determines a clock frequency of the control circuit 23.

Addresses 0 to 204 of the nonvolatile memory 26
7 (8 bits × 2048 addresses), as shown in FIG.
It is divided into pages 0 to 15 (the leftmost number is the boundary address of pages 0 to 15). And page 0
15 is divided into an operation data area for writing operation data and a user data area for writing user data such as optional mounting data, and addresses 0 to 31 of the operation data area are set as a system area. In the system area, an ID code is recorded in advance.

The operation data and the user data correspond to vehicle data. The system area stores the following key information in addition to the ID code (each key information will be described later).

System code, password, operation data area password setting information, user data area password setting information, user data area write protect setting information, area setting information, recording start page, R / W update counter

As shown in FIG. 6, the detection circuit 27 is composed of a detection diode 27a, a capacitor 27b, etc., and shapes the power signal received by the key-side antenna coil 21a and removes noise from the power signal. Remove,
It is given to the control circuit 23 on the key side. FIG. 10A shows a power signal supplied from the detection circuit 27 to the control circuit 23.

As shown in the figure, the control circuit 23 on the key side
Detects the input of SOM (Start Of Message),
Data reading is started, and the command content of the power signal transmitted from the control circuit 13 on the vehicle side is determined based on the subsequent power signal. Then, based on the determination result, the user data is read from the user data area of the nonvolatile memory 26, and the operation data (corresponding to the operation information) is written in the operation data area.

The time constant of the detection circuit 27 is set smaller than the time constant of the power supply circuit 22 in order to enable shaping of the power signal. Further, ΔT in FIG. 10 corresponds to the off time of the power amplifier 14 by the control circuit 13 on the vehicle side.

As shown in FIG. 6, the modulation circuit 28 includes a transistor 28a and a resistor 28b. The control circuit 23 on the key side turns on and off the transistor 28a to reduce the impedance of the resonance circuit 21. And responds to the command content from the control circuit 13 on the vehicle side. Then, in synchronization with the impedance change of the resonance circuit 21, the amplitude of the response signal (the carrier signal shown in FIG. 10B) received by the vehicle-side antenna coil 17a changes.

The vehicle-side detection circuit 15 shapes the response signal received by the antenna coil 17a and supplies the response signal to the control circuit 13 through the amplifier 16. FIG. 10B shows a response signal provided to the control circuit 13. As shown in the figure, after the frame synchronization, the control circuit 13
When the input is detected, data reading is started, and the response content from the key-side control circuit 23 is determined based on the subsequent response signal.

Next, the operation of the above configuration will be described. First, when exchanging data between both parties, the following preparations are made.

<Registration of key (when using master key 19B)> Insert the master key 19B into the ignition key cylinder. Then, after the starter switch 11a (see FIG. 8) of the vehicle 11 has been turned off for more than 10 seconds, the starter switch 11a is turned to ACC. Then, the control circuit 13 on the vehicle side transmits a power signal “send an ID code” to the control circuit 23 on the key side when the power amplifier 14 is turned on and off.

When the control circuit 23 on the key side receives the power signal, it starts up, determines the command content of the power signal, and reads the ID code from the system area of the nonvolatile memory 26.
Then, when the transistor 28a of the modulation circuit 28 is turned on and off, the ID code is transmitted to the control circuit 13 on the vehicle side.

The ID code of the master key 19B is stored in the nonvolatile memory of the control circuit 13 on the vehicle side in advance, and the control circuit 13 receives the ID code of the master key 19B from the control circuit 23 on the key side. The ID code is read from the non-volatile memory and compared with the ID code from the key side. In this case, since both match, LE
D18a1 blinks to notify that the mode has shifted to the key registration mode.

After confirming the blinking of the LED 18a1, the starter switch 11a is turned off, and the normal key 19A is inserted into the ignition key cylinder within 10 seconds.
Turn to ACC. Then, the control circuit 13 of the vehicle reads out the ID code from the normal key 19A according to the above-described procedure, and writes and registers the ID code in the nonvolatile memory. And the LED 18a1
Is turned on for 5 seconds to notify the registration of the normal key 19A.

When the LED 18a1 is turned off, the starter switch 11a is turned off, and another normal key 19A is inserted into the ignition key cylinder within 10 seconds.
Turn to CC. Then, the control circuit 13 on the vehicle side reads the ID code from the normal key 19A in the above-described procedure, and writes and registers the ID code in the nonvolatile memory. And the LED 18a1
Is turned on for 5 seconds to notify the registration of the normal key 19A.

After performing the above-mentioned registration for all the normal keys 19A, after confirming that the LED 18a1 is turned off,
Turn the starter switch 11a to START. Then
The control circuit 13 of the vehicle recognizes that the key registration has been completed, and blinks all the LEDs 18a1 to 18e1 and 18h a plurality of times (for example, twice) to notify the end of the key registration. Note that the maximum number of registered normal keys 19A is three,
Two master keys 19B are prepared.

<Registration of Master Code> A master code is necessary when registering a key without using the master key 19B, and is registered in the following procedure. Insert the normal key 19A into the ignition key cylinder and
Then, the mode switches 18a to 18e are selectively pressed five times. Here, the control circuit 13 on the vehicle side includes:
Numerical values 1 to 5 are stored in correspondence with the mode switches 18a to 18e.
Set the master code according to whether or not is operated. For example, the mode switches 18e, 18d, 18c, 18
When b and 18a are sequentially operated, the master code is set to "54321".

When the mode switches 18a to 18e are selectively operated five times, the set switch 18f is continuously pressed for 4 seconds or more. Then, the control circuit 13 on the vehicle side determines that the input of the master code is completed, and registers the master code in “54321”. Then, the LED 18h blinks a plurality of times (for example, five times) to notify the completion of the registration of the master code.

<Registration of key (when master key 19B is not used)> Insert the normal key 19A into the ignition key cylinder, let the starter switch 11a be OFF for at least 10 seconds, and then turn to ACC to input the master code. I do. The input of the master code is performed in the same procedure as described in the section <Registering the master code>.

Then, the control circuit 13 on the vehicle side uses the LED
18a1 blinks to notify that the mode has shifted to the key registration mode. Then, the ID code is read from the normal key 19A according to the above-described procedure, and is written and registered in the nonvolatile memory.
For key registration after the second key, the master key 1
This is the same as when 9B is used.

<Registration of Security Code> The security code is necessary when the system is stopped due to loss of the registration key, failure, or other reasons, and is registered in the following procedure. The stop of the system will be described later.

Normal key 19A or master key 19
B is inserted into the ignition key cylinder and the following (1)
The operations of (2) and (2) are set as one set, and this is performed four sets. (1) Set the key 19A or 19B to “(OFF) → AC
Turn N (C is an integer from 1 to 9) times to “C → OFF”. (2) Set the key 19A or 19B to “(OFF) → HE
Turn only once from “AT → OFF”. For example, the first set is N = 1, the second set is N = 2,3
When the set is N = 3 and the fourth set is N = 4,
The control circuit 13 on the vehicle side recognizes that the personal identification code is “1234”.

After inputting the password, the key 19A or 19B is held at HEAT for 4 seconds or more. Then, the control circuit 13 of the vehicle ends the registration of the personal identification code “1234”, and notifies the completion of the registration of the personal identification code by blinking the LED 18h a plurality of times (for example, five times).

<Setting of Internal Clock> The internal clock is a reference for detecting operation data such as the start date and time of the engine, and is set in the following procedure.

The starter switch 11a is operated by the normal key 19A.
Is turned to ACC, and the set switch 18f is continuously pressed for 4 seconds or more. Then, the control circuit 13 on the vehicle side sets L
The EDs 18a1 to 18e1 and 18h are repeated a plurality of times (for example,
Times), after the LED 18h stops blinking,
Only the EDs 18a1 to 18e1 are kept in a blinking state to notify that the mode has shifted to the clock setting mode.

When the set switch 18f is operated, the operation of the digital switch 18g and the operation of the set switch 18f are set as one set, and by performing these five sets,
Enter year, month, day, hour, and minute sequentially. Then, the control circuit 13 on the vehicle side sets the year, month, day, hour, and minute of the internal clock based on the output signal from the digital switch 18g. At the same time, the LEDs 18a1 to 18e1 are sequentially turned off each time the setting of year, month, day, hour, and minute is completed. And
The LEDs 18a1 to 18e1 and 18f are turned a plurality of times (for example,
The completion of the setting of the internal clock is notified in accordance with the flashing.

When the starter switch 11a is turned to ACC in performing <registering the master code>, <registering the password code>, and <setting the internal clock>, the control circuit 13 on the vehicle side reads "ID code Is sent to the control circuit 23 on the key side. Then
The key-side control circuit 23 reads the ID code from the system area of the non-volatile memory 26 and controls the vehicle-side control circuit 1
Send to 3.

When receiving the ID code, the control circuit 13 of the vehicle reads the registered ID code from the nonvolatile memory and compares it with the ID code from the key side. Here, only when the ID code from the key side exists in the read ID code, <register master code>, <register password>, and <set internal clock> are allowed.

<Assigning the work mode to the mode switch> The mode switches 18a to 18e are for causing the control circuit 13 of the vehicle to recognize which work is currently being performed (for example, the work of mode 1 is performed). When the mode switch 18a is operated, the mode switch 18a is operated to inform the control circuit 13 that the operation of the mode 1 is being performed), the work mode assigned near the mode switches 18a to 18e is clearly indicated, and the mode switches 18a to 18e are erroneously operated. Is preferably prevented.

Next, the operation of the above configuration will be described. <Door Security Function> The normal key 19A is inserted into the door key cylinder, turned to the right (lock side) or left (unlock side), and then returned to the original position. Then, the vehicle-side control circuit 13 transmits a power signal “transmit an ID code” to the key-side control circuit 23 and determines whether the ID code received from the key-side control circuit 23 is registered. I do. For example, when the ID code from the key side is registered, the lever on the back side of the door key cylinder is linked to the door lock mechanism, and the door is unlocked. Therefore, in this state, turning the normal key 19A to the left (unlocked side) unlocks the door.

When the ID code from the key side is not registered, the control circuit 13 on the vehicle side records in the nonvolatile memory that there is an abnormality on the security surface. At the same time, an operation of sounding a horn (not shown) of the vehicle 11 for a predetermined time (for example, 30 seconds) and an operation of blinking a light (not shown) of the vehicle 11 for a predetermined time (for example, 4 minutes) are performed. Notifies that there was an abnormality on the surface. Reference numeral 11b in FIG. 8 denotes a door switch that is turned on in accordance with the rotation of the door key cylinder, and the control circuit 13 on the vehicle side determines that the normal key 19A is turned based on an on signal from the door switch 11b. Is detected.

<Immobilizer Function> Insert the normal key 19A into the ignition key cylinder and turn it to ACC or HEAT. Then, the vehicle-side control circuit 13 transmits a power signal “transmit an ID code” to the key-side control circuit 23 and determines whether the ID code received from the key-side control circuit 23 is registered. I do.

For example, when the ID code from the key side is registered, the control circuit 13 on the vehicle side turns on the main power supply of the vehicle 11 and permits the start of the engine. Also,
If the ID code from the key side is not registered, the fact that there is an abnormality on the security surface is recorded in the nonvolatile memory. At the same time, the horn sounds and the light flashes to notify that there is an abnormality on the security surface.

The control circuit 13 on the vehicle side has the following (1)
Alternatively, when the operation of (2) is detected, the sounding of the horn and the blinking of the light are stopped. (1) The starter switch 11a is turned to HEAT or ACC by the registered normal key 19A or master key 19B. (2) Turn the door switch 11b with the registered normal key 19A or master key 19B (either right or left).

<Operation Data Recording Function> When the engine is started, the control circuit 13 on the vehicle side transmits a power signal "record operation data" to the control circuit 23 on the key side.
A power signal indicating “the engine start date and time” is transmitted. Then, the control circuit 23 on the key side writes the start date and start time of the engine in the operation data area of the nonvolatile memory 26. In this case, since the system area is provided in the first part of the operation data area, the operation data is written with address 32 of page 0 as the start address.

When the engine is started, the control circuit 13 on the vehicle side sets the ON time T of the mode switches 18a to 18e.
1 to T5, and the off time T0 during which none of the mode switches 18a to 18e are turned on.

For example, when the mode switch 18a corresponding to the mode 1 is operated, the control circuit 13 of the vehicle measures the operation time T1 of the mode 1 as the operation time counter 1 is added. In this state, when the mode switch 18b corresponding to the work mode 2 is operated, the work time counter 2 is added, and the work time T2 of the work mode 2 is measured.

The control circuit 13 on the vehicle side sets the on-time T1 to
When T5 and the off time T0 are measured, the work mode is transmitted to the control circuit 23 on the key side at intervals of 6 minutes, and the work mode for each unit time (see FIG. 13) is recorded. This working mode is
The one with the longest working time among the six minutes is transmitted. For example, the ON time of the mode switch 18a is one minute,
If the ON time of the mode switch 18b is 2 minutes and the ON time of the mode switch 18c is 3 minutes, the control circuit 13
Transmits that the work mode for 6 minutes is “mode 3” corresponding to the mode switch 18c. The off time T0
Is the longest, "mode 0" is transmitted.

<Security History Function> As described above, the control circuit 13 on the vehicle side records the security history while the engine is stopped, and when the engine is started, the security memory is saved from the nonvolatile memory. The history is read, and the command signal “record data” and the data “security history” are transmitted. Then, the key-side control circuit 23 writes “security history” in the operation data area of the nonvolatile memory 26.

<System stop function> Inserting the normal key 19A or the master key 19B (a key that is not registered) into the starter switch 11a, and performing the operation described in the section <Registration of security code>. Enter your PIN code. Then, the control circuit 13 on the vehicle side sets <
Operation data recording function>, <immobilizer function>, <
When the door security function> is stopped, and the LED 18h is turned on and off a plurality of times (for example, five times), a system down is notified.

The system can be stopped also by inserting the normal key 19A or the master key 19B (a key that is not registered) into the door key cylinder and inputting a password. In this case, the input of the personal identification code is performed by turning the key 19A or 19B like "(OFF →) right (lock side) → OFF". In addition, the input is determined by “(OFF) → left (unlocked side)
→ OFF ".

<System Setup> Normal system key 19A or master key 19B in system down state
(A key that is not registered can also be used) Starter switch 1
1a, and the user inputs the personal identification code in accordance with the operation described in the section <Registration of personal identification code>. Then
The control circuit 13 on the vehicle sets up the system.

In the office 29, as shown in FIG. 1, a desktop personal computer 30 (hereinafter, referred to as a personal computer 30) corresponding to an external control device is installed. A reader / writer device 31 (hereinafter, referred to as an R / W device 31) corresponding to the device is connected. Hereinafter, the R / W device 31 will be described in detail.

In the box 32, as shown in FIG.
A power supply circuit 33 and a control circuit 34 mainly composed of a microcomputer are provided. And box 3
2, a jack 32a (see FIG. 5) and a power switch 32b (see FIG. 3) are attached. As shown in FIG.
a, and the outlet 35b of the AC adapter 35 is plugged into a commercial AC power supply (not shown).
2b, the control circuit 34 through the power supply circuit 33
Is supplied with power, and the control circuit 34 is driven.

As shown in FIG. 4, a green indicator lens 32c is attached to the box 32. Then, in the box 32, as shown in FIG.
The control circuit 34 supplies power to the LED 36a when the power switch 32b is turned on. This illuminates the indicator lens 32c,
Notifies that the power is on.

A serial interface 37 is provided in the box 32. In box 32,
As shown in FIG. 5, a connector 32d is attached, and as shown in FIG.
When the connector 30b is inserted, the control circuit 34 and the personal computer 30 are connected via the serial interface 37, and the communication between the personal computer 30 and the control circuit 34 is performed serially.

In the box 32, as shown in FIG.
A cylinder 38 is provided. The cylindrical body 38 has a rectangular cross section in which one end surface is open and the other end surface is closed, and one end surface 38a of the cylindrical body 38 penetrates through a side plate of the box 32 as shown in FIG. Exposed to the outside.

In the box 32, as shown in FIG.
A key detection switch 39 is provided, and a plunger 39a of the key detection switch 39 is disposed in the cylinder 38. When the main body 19a of the normal key 19A or the main body 19a of the master key 19B is inserted into the cylindrical body 38 from one end surface 38a of the cylindrical body 38 (hereinafter, referred to as a key insertion port 38a), the plunger 39a is moved to the main body. The key detection switch 39 is turned on by being pressed downward by the portion 19a.

An antenna coil 40 is provided at one end of the cylindrical body 38.
When the main body 19a of the normal key 19A or the main body 19a of the master key 19B is inserted into the key insertion port 38a, the antenna coil 40a and the antenna coil 21a on the key side are electromagnetically connected. Connected.
Reference numeral 40b in FIG. 2 indicates a resonance capacitor that forms the resonance circuit 40 together with the antenna coil 40a.

As shown in FIG. 2, the antenna coil 40a is connected to a control circuit 34 via a power amplifier 41, and the control circuit 34 receives a command signal transmitted from the personal computer 30 through the serial interface 37. A power signal (carrier signal) whose level decreases at a predetermined timing as the power amplifier 41 is turned on and off
From the antenna coil 40a to the antenna coil 2 on the key side.
1a.

This power signal is the same as that supplied from the control circuit 13 on the vehicle side to the control circuit 23 on the key side, and the detection circuit 27 on the key side, as shown in FIG. The power signal received through the coil 21a is shaped and given to the control circuit 23. Then, the control circuit 2
3 starts reading data in response to detecting the input of the SOM, and determines the content of the command based on the subsequent power signal. When the transistor 28a of the modulation circuit 28 is turned on and off, the R / R
A response signal is transmitted to the antenna coil 40a on the W device side.

In the box 32, as shown in FIG.
A detection circuit 42 and an amplifier 43 are provided. The detection circuit 42 shapes the response signal received by the antenna coil 40a, and supplies the response signal to the control circuit 34 through the amplifier 43.
This response signal is similar to the response signal transmitted from the control circuit 23 on the key side to the control circuit 13 on the vehicle side.
As shown in FIG. 10B, the control circuit 34 on the R / W device side starts reading the response signal upon detecting the input of the SOM after the frame synchronization, and based on the subsequent response signal. To determine the response content.

As shown in FIG. 4, a red indicator lens 32d is attached to the box 32. In the box 32, as shown in FIG.
6b, and a control circuit 34 on the R / W device side.
Illuminates the indicator lens 32d when power is supplied to the LED 36b, and the R / W device 31 and the key 19
A is notified that communication is being performed with A (or 19B).

Next, the operation of the above configuration will be described. <Operation data read / save function> After the power switch 32b of the R / W device 31 is turned on and the main body 19a of the normal key 19A is inserted into the key insertion slot 38a, the personal computer 30 is activated. As shown in FIG. 11A, an operation data management key 44a, a key information setting key 44b, a user data management key 44c, and an end key 44d are displayed on the display device 30a (see FIG. 1). Here, when the operation data management key 44a is clicked, as shown in FIG.
a, the tabulation processing key 45b, and the end key 45c are displayed.

In this state, the data read key 45a
Is clicked, the personal computer 30 gives a command signal "Detect the presence or absence of a key" to the control circuit 34 on the R / W device side. Then, the control circuit 34 on the R / W device side
Determines the presence or absence of a key based on the output signal from the key detection switch 39, and transmits the determination result to the personal computer 30.

For example, when a determination result indicating that there is no key is given, the personal computer 30 displays a message on the display device 30a to urge the insertion of the normal key 19A. When a determination result indicating that a key is present is given, a command signal "Read ID code" is transmitted to the control circuit 34 on the R / W device side.

Upon receiving the command signal, the control circuit 34 on the R / W device side turns on and off the power amplifier 41, and sends the “ID” to the control circuit 23 on the key side through the antenna coil 21a on the key side from the antenna coil 40a. Send the code ''.

Upon receiving the power signal, the control circuit 23 on the key side starts up and determines the command content of the power signal. Then, when the command content “Send ID code” is determined, the ID
The code is read out, and the transistor 28a of the modulation circuit 28 is turned on / off based on the ID code.
The ID code is transmitted to the control circuit 34 on the device side.

When the control circuit 34 of the R / W device receives the ID code, it transmits the ID code to the personal computer 30. Then, as shown in FIG. 12A, the personal computer 30 sets “A12
Read the operation data of 345 (ID code). 』
Message 46a, an OK key 46b, a key change key 46c, and a cancel key 46d are displayed.

Here, when the cancel key 46d is clicked, the personal computer 30 cancels the reading of the operation data and returns the screen to the previous state. When the key change key 46c is clicked, the control circuit 3 on the R / W device side operates.
4 is given a command signal "Read ID code", and by repeating the above-described series of operations, the ID code of the key 19A newly inserted into the key insertion port 38a is read, and this ID code is read. Confirmation message 46 based on
Rewrite a.

When the OK key 46b is clicked, the personal computer 30 gives a command signal "Read operation data" to the control circuit 34 on the R / W device side. Then, the control circuit 34 of the R / W device gives a power signal “send operation data” to the control circuit 23 of the key.

Upon receiving the power signal, the control circuit 23 on the key side starts up and determines the contents of the command of the power signal. Then, the operation data is read from the operation data area of the nonvolatile memory 26, and the modulation circuit 28 is read out based on the operation data.
Is turned on / off, the R /
The operation data is transmitted to the control circuit 34 of the W device. Then, the control circuit 34 on the R / W device side receives the operation data and transfers it to the personal computer 30.

While communicating the operation data with the control circuit 34 on the R / W device side, the personal computer 30 displays a confirmation message 47a, "Reading data ...", as shown in FIG. Graph 47b, cancel key 4
7c is displayed, and the progress of communication is notified as the length H of the graph 47b is changed. FIG.
(A), when the cancel key 46d is clicked, the personal computer 30 stops reading the operation data and returns the screen to the state shown in FIG. 11 (b).

When the communication of the operation data is completed, the personal computer 30 displays the operation data 48a, the save key 48b, and the end key 48c as shown in FIG. 13. When the end key 48c is clicked here, the processing is executed. finish. The operation data 48a includes date, time, work mode, abnormality record,
It consists of security, "12: July 1st:
The engine was started at 00 ”,“ 1 on July 1
2:06 to 12:24 indicates that the work of the mode 1 has been performed (work content per unit time).

When the save key 48b is clicked in FIG. 13, the personal computer 30 saves the key data in a file as shown in FIG. 』
Message 49a, OK key 49b, cancel key 49c, and check boss 49d.

Here, check boss 49d, OK key 4
When 9b is clicked sequentially, the personal computer 30 writes the operation data 48a in the external storage medium 30c (floppy disk or hard disk) of FIG. 1 in association with the ID code. At the same time, the control circuit 3 on the R / W device side
4 is given a command signal "command clear of operation data". Then, the control circuit 34 on the R / W device side
Gives a command signal "clear operation data" to the key-side control circuit 23,
Clears (initializes) the operation data written in the operation data area of the nonvolatile memory 26.

In FIG. 14A, when the OK key 49b is directly clicked, the personal computer 30 does not clear the operation data in the non-volatile memory 26 on the key side, but stores the operation data 48a in the external storage medium 30c. Write. When the cancel key 49c is clicked, the personal computer 30
Returns the screen to its previous state.

When the personal computer 30 stores the operation data 48a in the external storage medium 30c, as shown in FIG. Is displayed, an OK key 50b, and a file name 50c are displayed. Here, if the OK key 50b is clicked, the processing is terminated. The file name 50c is created by the personal computer 30, where A is the Christian era (for example, 1996 is represented by A, 1997 is represented by B,..., 2021 is represented by Z),
2 is the month, and A12345 is the ID code of the key.

<Operation Data Aggregation Processing Function> In FIG. 11 (b), when the aggregation processing key 45b is clicked, the personal computer 30 causes the aggregation processing table 51a and the ID code input section 51b as shown in FIG. , Year input section 51c, month input section 51d, OK key 51e, and end key 51f. Here, when the end key 51f is clicked, the processing ends.

When the OK key 51e is clicked after the ID code, year, and month are input to the ID code input section 51b, the year input section 51c, and the month input section 51d, the personal computer 30 displays the input ID. The operation data corresponding to the code and the year and month are read from the external storage medium 30c. And
As the operation data is processed based on the totalization processing program, the operation data is totaled for each key (for each ID code), every month, and for each work content, and as shown in FIG. Write in the designated column. Note that this totaling process is performed by the personal computer 30 alone, and the R / W
The device 31 may not be connected.

<Key Information Reading Function> FIG.
When the key information setting key 44b is clicked, the personal computer 30 gives a command signal "Read key information" to the control circuit 34 on the R / W device side.
Then, the control circuit 34 of the R / W device transmits a command signal “send key information” to the control circuit 23 of the key.

When the control circuit 23 on the key side receives the command signal, it starts up, reads out the key information from the system area of the nonvolatile memory 26, and transmits it to the personal computer 30 through the control circuit 34 on the R / W device side. Then, the personal computer 30
Is an ID code 5 as key information as shown in FIG.
2a, the next recording start page 52b, and the R / W update counter 52c are displayed. At the same time, check boss 52d1
52f2, last page input section 52g, key write key 52h, key information read key 52i, end key 5
2j is displayed.

The next recording start page indicates the page from which the operation data is read from the nonvolatile memory 26 on the key side. If the next recording start page is three pages, the R / W device uses three pages. The operation data is read with the start page. Also, the last page input section 52g
Is used to change the boundary between the operation data area and the user data area. In the case of FIG.
Page. The R / W update counter in FIG.
This is added when the operation data is read out from the key 19A and erased, and indicates the history of initialization.

<Key Information Change Function 1> The check bosses 52d1 and 52d2 in FIG. 17 are for selecting whether or not to use a password when reading operation data from the operation data area of the nonvolatile memory 26. When a password is used, the check boss 52d1 is clicked, and as shown in FIG. 18, the operation data area password is switched as required, and then the write key 52h is clicked.

The check bosses 52e1 and 52e2 in FIG. 17 are for selecting whether or not to use a password when reading user data from the user data area of the nonvolatile memory 26. Clicks on the check boss 52e1, switches the user data area password as necessary as shown in FIG. 18, and then clicks on the write key 52h.

The check bosses 52f1 and 52f2 in FIG. 17 are for selecting whether or not the user data area is rewritable. When the user data area is not rewritable, the check boss 52f1 and 52f2 are used. Is clicked, and as shown in FIG. 18, after the user data area write protection is switched as required, the write key 52h is clicked.

The personal computer 30 has a write key 52
When h is clicked, as shown in FIG.
"I need a system code. Enter the system code. Message 53a, OK key 53b,
A cancel key 53c and a system code input section 53d are displayed. Here, when the cancel key 53c is clicked, the screen is returned to the previous state.

After a system code (up to 6 alphanumeric characters) is input to the system code input section 53d,
When the OK key 53b is clicked, the personal computer 30
When a command is given to the control circuit 23 on the key side through the control circuit 34 on the R / W device side, a mode for reading operation data using a password, a mode for reading user data using a password, and a user data area. Switch to the mode that disables rewriting.

When the personal computer 30 switches the mode, as shown in FIG. 19 (b), the message "The following writing has been completed. 54a, a mode switching content 54b of "area setting, operation data password setting, user data area password setting, write protection setting" and an OK key 54c are displayed. Here, when the OK key 54c is clicked, the processing is terminated.

<Key Information Change Function 2> In FIG. 17, after the number N (1 to 15) is input to the last page input section 52g, when the write key 52h is clicked, the personal computer 30 As shown in FIG. 19A, a message 53a, an OK key 53b, a cancel key 53c, and a system code input section 53d are displayed.

Here, when the OK key 53b is clicked after the system code is input to the system code input section 53d, the personal computer 30 is transmitted to the key side control circuit 23 through the R / W device side control circuit 34. When the command is given, the input value N is changed to the last page of the operation data area, N
+1 is set as the start page of the user data area, and FIG.
As shown in FIG. 9B, a message 54a, mode switching contents 54b, and an OK key 54c are displayed.

<Key Information Change Function 3> In FIG. 20, when the password change key 55a is clicked,
As shown in FIG. 19A, the personal computer 30 transmits a message 53a, an OK key 53b, a cancel key 53c,
The system code input section 53d is displayed. Here, when the OK key 53b is clicked after the system code is input to the system code input section 53d, the personal computer 30
Displays the password input unit 56a, and displays the current password (PASS) on the input unit 56a, as shown in FIG.

In this state, after the change password is input to the password input section 56a, the write key 5
When 2h is clicked, the personal computer 30 displays a message 53a and an OK key 53, as shown in FIG.
b, cancel key 53c, system code input unit 53
Display d. Here, when the OK key 53b is clicked after the system code is input to the system code input section 53d, a command is given to the key-side control circuit 23 through the R / W device-side control circuit 34, change the password. Then, as shown in FIG. 19B, the message 54a, the mode switching content 54b, the OK
The key 54c is displayed.

<Key information change function 4> R / W device 31
With the key 19A inserted in the key insertion port 38a of
When the user data management key 44c in FIG. 11A is clicked, the personal computer 30 reads the ID code from the normal key 19A, and as shown in FIG. 12A, a confirmation message 46a and an OK key 46b. , Key change key 4
6c and a cancel key 46d are displayed. Here, OK
When the key 46b is clicked, the user data is read from the user data area of the non-volatile memory 26 of the control circuit 23 on the key side through the control circuit 34 on the R / W device side and displayed on the screen.

When the mode is switched to a mode for reading user data using a password, the personal computer 30
Display the password input screen. When it is detected that the password has been correctly input, the user data is read from the nonvolatile memory 26 and displayed on the screen.

Here, the ID code, engine number,
When user data (equivalent to user information) such as optional installation data, dealer maintenance data, refueling history, and diagnosis data at the time of use is input, the personal computer 30 returns to FIG.
As shown in the figure, a message 53a, an OK key 53b, a cancel key 53c, and a system code input section 53d are displayed.

When the mode has been switched to the mode in which the user data area cannot be rewritten, the personal computer 30 displays a message on the screen to notify that the user data cannot be written.

In FIG. 19A, after the system code is input to the system code input section 53d and the OK key 53b is clicked, the personal computer 30 sets the R / W
After writing the user data in the user data area of the non-volatile memory 26 or rewriting the user data through the control circuit 34 on the device side, as shown in FIG.
b, OK key 54c is displayed.

According to the above embodiment, the operation data is communicated between the vehicle controller 12 and the R / W device 31 using the key 19A as a medium. This eliminates the need to carry both the key 19A and the IC card, which is different from the related art in which operation data is communicated using the IC card as a medium, thereby improving usability. Especially construction vehicle 1
In the case of special vehicles such as 1st, keys 19A and I
Since the inconvenience of carrying both C cards is eliminated, it is more advantageous in terms of usability.

Further, the present invention is applied to a system having a security function (immobilizer function, door security function). Therefore, the operation data can be communicated using the existing hardware configuration. At the same time, since the engine is started by an unregistered key and the operation data is prevented from being copied, it is advantageous in terms of data security.

Also, the personal computer 30 and the R / W device 31
, User data is written to the nonvolatile memory 26 on the key side, and user data is read from the nonvolatile memory 26. For this reason, it is not necessary to write the user data in an IC card or a notebook and carry it with the user, so that usability is further improved.

Further, at the time of communication between the vehicle controller 12 and the transponder 20, the operating data is supplied from the vehicle controller 12 to the transponder 20 in a non-contact manner to record the operation data. Moreover, the transponder 20 and the R /
At the time of communication with the W device 31, the operating power was applied to the transponder 20 from the R / W device 31 in a non-contact manner, and the operation data was read. For this reason, it is not necessary to incorporate a power source such as a battery in the key 19A, so that the key 19A is prevented from being enlarged, and the trouble of replacing the battery is eliminated.

A key detection switch 39 is provided in the R / W device 31, and the presence or absence of the key 19A is detected based on an output signal from the key detection switch 39. Therefore, key 1
Since the abnormality notification can be performed by detecting the forgetting of the insertion of the key 9A, the forgetting of the key 19A is prevented.

The operation data of the vehicle 11 is stored in the personal computer 3.
Counting processing was performed according to 0 (<counting processing function>). For this reason, it is not necessary to collect the operation results manually, and the usability is improved. Also, the vehicle controller 12 is provided with mode switches 18a to 18e, and the operation mode is determined according to the operation contents of the mode switches 18a to 18e. Therefore, the operation time (operation data) can be measured for each operation mode, and the usability is further improved.

In the above embodiment, the R / W device 3
1, a key detection switch 39 is provided to detect whether or not the key 19A is inserted into the key insertion slot 38a. However, the present invention is not limited to this. For example, the key detection switch 39 may be omitted. In this case, even if the R / W device 31 tries to communicate with the transponder 20, communication cannot be performed. Further, in the above embodiment, the R / W device 31
Was driven by an external power supply (commercial AC power supply), but the invention is not limited to this. For example, an internal power supply such as a battery is incorporated in the R / W device 31, and the R / W device 31
The W device 31 may be driven.

Further, in the above-described embodiment, the desktop personal computer 30 is exemplified as the external control device. However, the present invention is not limited to this. For example, a portable notebook personal computer, sub-notebook personal computer or the like may be used.

Further, in the above embodiment, the personal computer 3
Although the user data is written into the transponder 20 through the R / W device 31 and the R / W device 31, the present invention is not limited to this. For example, the user data writing function may be omitted. In the case of this configuration, the R / W device 31 functions as a dedicated reader for reading operation data from the transponder 20.

In the above embodiment, the present invention is applied to the construction vehicle 1. However, the present invention is not limited to this, and may be applied to, for example, an automobile. In this case, the input of the personal identification code is performed using the normal key 19A or the master key 1.
9B is inserted into the ignition key cylinder, and the following operations (1) and (2) are set as one set, and four sets are performed. (1) Turn the key 19A or 19B to “(ACC) → ON”
→ Turn to ACC only N times. (2) Press the key 19A or 19B from “(ACC) → OF”.
Turn once only to “F → ACC”.

[0116]

As is clear from the above description, the data carrier system of the present invention has the following effects. According to the first aspect, the operation data is communicated using the key of the vehicle as a medium. This eliminates the need to carry an IC card, thus improving usability. According to the second aspect, the present invention is applied to an existing system having a security function. Therefore, the operation data can be communicated using the existing hardware configuration. At the same time, the vehicle is started by an unregistered key and the operation data is prevented from being copied, which is advantageous in terms of data security.

According to the third aspect of the present invention, the user data is provided from the reader device to the data carrier device and recorded, or the user data recorded on the data carrier device is read. Therefore, it is not necessary to record user data on an IC card, a notebook, or the like, and to carry the user data, thereby further improving usability. According to the fourth aspect, the operating power is supplied from the vehicle-side control device to the data carrier device and the reader device to the data carrier device in a non-contact manner. This eliminates the need to incorporate a power source such as a battery in the key, thereby preventing the key from being enlarged and
Eliminates the hassle of replacing batteries.

[Brief description of the drawings]

FIG. 1 is a diagram showing an embodiment of the present invention (a diagram schematically showing the entire configuration).

FIG. 2 is a diagram showing an electrical configuration of an R / W device.

FIG. 3 is a front view of the R / W device, partially cut away;

FIG. 4 is a top view showing the R / W device.

FIG. 5 is a side view showing the R / W device.

FIG. 6 is a diagram showing an electrical configuration of a transponder.

FIG. 7 is a diagram showing a data layout of a nonvolatile memory;

FIG. 8 is a diagram showing an electrical configuration of a vehicle-side controller.

FIG. 9 is a diagram showing an appearance of a vehicle-side controller.

FIG. 10 shows a vehicle-side controller, transponder, R /
The figure which shows the communication waveform of W apparatus

FIG. 11 is a diagram showing a screen of a personal computer.

FIG. 12 is a diagram showing a screen of a personal computer.

FIG. 13 is a diagram showing a screen of a personal computer.

FIG. 14 is a diagram showing a screen of a personal computer.

FIG. 15 is a diagram showing a screen of a personal computer.

FIG. 16 is a diagram showing a screen of a personal computer.

FIG. 17 shows a screen of a personal computer.

FIG. 18 is a diagram showing a screen of a personal computer.

FIG. 19 is a diagram showing a screen of a personal computer.

FIG. 20 is a diagram showing a screen of a personal computer.

FIG. 21 shows a screen of a personal computer.

FIG. 22 shows a conventional example.

[Explanation of symbols]

11 is a construction vehicle (vehicle), 12 is a vehicle-side controller (vehicle-side control device), 17a is an antenna coil, 19A
Is a normal key (key), 19B is a master key (key),
20 is a transponder (data carrier device), 21a
Denotes an antenna coil, 31 denotes a reader / writer device (reader device), and 40a denotes an antenna coil.

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Sadao Kokubu 1 Noda, Toyota, Oguchi-machi, Oguchi-machi, Niwa-gun, Aichi Prefecture Tokai Rika Electric Works, Ltd.

Claims (4)

[Claims] 1. A vehicle-side control device mounted on a vehicle and transmitting operation information of the vehicle; a data carrier device provided on a key of the vehicle and recording operation information transmitted from the vehicle-side control device; A data carrier system, comprising: a reader device for reading operation information from the data carrier device when a command signal is given from a control device. 2. The vehicle control device according to claim 1, wherein the vehicle-side control device permits starting of the vehicle when it determines that the key is registered based on the key information transmitted from the data carrier device. Data carrier system as described. 3. The reader device according to claim 1, wherein the reader device has a reader / writer function for giving and recording user information to the data carrier device and reading the user information from the data carrier device. Data carrier system. 4. A vehicle-side control device, a data carrier device,
The reader device has an antenna coil, and communication between the vehicle-side control device and the data carrier device, and communication between the data carrier device and the reader device are performed in a non-contact manner through the antenna coil. At the time of communication, operating power is supplied to the data carrier device from the antenna coil of the vehicle-side control device through the antenna coil of the data carrier device in a non-contact manner.
2. The data carrier system according to claim 1, wherein operating power is supplied from the antenna coil of the reader device to the data carrier device through the antenna coil of the data carrier device in a non-contact manner.